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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Pesticide Science
Journal Basic Information
Journal DOI :
The Korean Society of Pesticide Science
Editor in Chief :
Volume & Issues
Volume 2, Issue 3 - Dec 1998
Volume 2, Issue 2 - Sep 1998
Volume 2, Issue 1 - Apr 1998
Selecting the target year
Herbicidal action mechanism of chlorsulfuron
Kim, Song-Mun ; Kim, Yong-Ho ; Hur, Jang-Hyun ; Han, Dae-Sung ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 1~20
Chlorsulfuron, one of sulfonylurea herbicides acts through inhibition of acetolactate syuthase (EC 188.8.131.52; ALS, also known as acetohydroxyacid synthase) in the branched-chain amino acid biosynthesis process. After chlorsulfuron-ALS interaction, many physiological and metabolic disruptions occur in plants. However, it is not clear how this chlorsulfuron-ALS interaction affects those physiological and metabolic processes and how this interaction leads subsequently to plant death. Several researchers suggested that the death of chlorsulfuron-treated plants might be due to a shortage of the branched-chain amino acids, an accumulation of toxic metabolites, and/or a depletion of photoassimilates. It remains as a mystery presently, however, if such changes result in the plant death. In this review, we discussed how the chlorsulfuran-ALS interaction leads to physiological and metabolic disruptions in plants.
Fungicidal activities of leguminous seed extracts toward phytopathogenic fungi
Lee, Hoi-Seon ; Kim, Byung-Sup ; Kim, Heung-Tae ; Cho, Kwang-Yun ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 21~27
Methanol extracts from 25 leguminous seeds were tested for their fungicidal activities toward six phytopathogenic fungi, using whole plant test in a greenhouse. The efficacy varied with both the plant pathogen and legume species used. At 5 mg/pot, potent fungicidal activities were produced from extracts of Cassia obtusifolia, Glycine max var. solitae, G. max var. yagkong, G. max var. hooktae, Phaseolus multiflorus, P. radiatus var. aurea, and Vigna sinensis against Botrytis cinerea, Puccinia recondita, and Erysiphe graminis. These seed extracts were highly effective against three B. cinerea strains resistant to carbendazim, procymidone, and diethofencarb. All leguminous seed extracts revealed weak or no fungicidal effect against Rhizoctonia solani, Pyricularia grisea, and Phytophthora infestans. As a naturally occurring fungicide, leguminous seed-derived materials described could be useful as new fungicidal products against various plant diseases induced by phytopathogenic fungi.
Characterization of a heat-resistant antimicrobial peptide secreted by Bacillus subtilis A405
Koo, Bon-Sung ; Lee, Seung-Bum ; Yoon, Sang-Hong ; Song, Gae-Kyung ; Chung, Dae-Sung ; Byun, Myung-Ok ; Ryu, Jin-Chang ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 28~35
An antimicrobial peptide producing bacterium, Bacillus subtilis A405, was screened and identified among 700 of antagonistic bacteria. The heat-resistant antimicrobial peptide, AMP-405, was purified from the broth culture of B. subtilis A405 through
ammonium sulfate precipitation and ultrafiltration. The AMP-405 exhibited strong antimicrobial activities against Botrytis cinerea, Cercospora sp., Fusarium oxysporum, Penicillium digitatum, Celletotrichum gloeosporioides, Rhizoctonia solani, Pythium ultimum, Pyricularia oryzae, Escherichia coli, Pseudomonas spp. and Candida albicans. The molecular weight of the peptide was about 3.0 kDa determined by SDS-PAGE, Native-PAGE and Tris-Tricine gradient electrophoresis, and composed of 9 kinds of amino acid such as aspartic acid, glycine, serine, glutamine, valine, leucine, isoleucine, proline, tyrocine. To determine the efficiency of AMP-405 as a potential maintenance of fruits freshness, cherry tomato was srored at
for 2 weeks after treatment with
of AMP-405 and
spores/ml of Botrytis cinerea simultaneously. Treatment with AMP-405 resulted in significantly less infection by Botrytis cinerea, than the treatment with tap water as a control.
Physical properties, released patterns and bio-efficacy of granular mixtures with chlomethoxyfen and butachlor formulated by different methods
Chung, Bong-Jin ; Yeon, Jae-Heum ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 36~44
To develope cost-effective new granular formulation of mixture with 7.0% chlomethoxyfen and 3.5% butachlor, this study was conducted by investigation of floatability, dispersibility or collapsability and released concentration of active ingredients in water and bio-efficacies of the granules formulated by different formulation methods compared to commercial pellet-extruded granules. They were formulated by coating on or impregnation into extruded pellets, sands and zeolites with two active ingredients, binders, friction reducer, dispersing agents and bentonite. Pellet-coated method showed similar floatability, collapsability and bio-efficacy to the commercial pellet-extruded one or better than that but unstable patterns of released concentration of chlomethoxyfen because of easy isolation of coated technical particles from the surface of granules. Sand-coated methods showed similar physical properties, released pattern of two active ingredients, and bio-efficacy to the commercial one. Liquid binders and/or dispersing agents are more important than powdered ones to control released concentration of active ingredients from the granule mixtures, to improve the floatability and dispersibility, and to show good bio-efficacy. Sand-coated one might be a suitable method if types and amount of liquid binders and dispersing agents are selected.
Influence of substituted phenyl backbone on the fungicidal activity of phenyl or 2-pyridyl substituents in bis-aromatic
-unsaturated ketone derivatives
Sung, Nack-Do ; Yu, Seong-Jae ; Choi, Kyoung-Seob ; Kim, Hyun-Jae ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 45~51
A series of bis-aromatic
-unsaturated ketone derivatives with mesaured fungicidal activities in vivo against rice blast(Pyricularia oryzae), tomato leaf blight (Phytophtora infestans) and barley powdery mildew(Erysiphe graminis) were studied by using quantitative structure activity relationship equations. The QSAR model for the activity of phenyl substituents,
, clearly reveals three important factors, namely, resonance(R<0), optimal molecular hydrophobicity(
) and optimal distance(
of substituent, respectively. But in case of 2-pyridyl substituents,
, the activity were governed by optimal molecular refractivity
, steric effect(Es<0) and LUMO energy(e.v). The fungicidal activity relationship of phenyl and 2-pyridyl substituents against Erysiphe graminis have been proportioned.
Biological activities of novel quinolinyloxadiazoles
Hwang, In-Taek ; Choi, Jung-Sub ; Hong, Kyung-Sik ; Lee, Byung-Hoe ; Kim, Jin-Seog ; Ryu, Eung-Kul ; Cho, Kwang-Yun ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 52~63
A novel quinolineoxadiazoles, substituted the carboxylic acid group with 1,2,4-oxadiazole radicle, of KSC-16960 and related compounds were evaluated to examine the herbicidal activity, crop injury and residual effect of after-vegetable crops compared with those of quinclorac (3,7-dichloro-8-quinolinecarboxylic acid), of which use is now banned because of its residual activity to some succeeding vegetable crops. KSC-16960 showed 2- and 3-leaf stages of barnyardgrasses effectively controlled by more than 95 and 90%, respectively, at a rate of 6.25 g/ha. The dose of KSC-16960 controlled 4- and 5-leaf stages of barnyardgrasses by more than 90% were found to be 50 g and 100 g/ha, respectively. The selectivity of KSC-16960 between direct-seeded rice and barnyardgrass was approximately 2-fold higher than that of quinclorac when they were treated to the soil. The selectivity indices of KSC-16960 and of quinclorac between 1-leaf stage of direct seeded rice and 5-leaf stage of barnyardgrass were 44 and 23, respectively, and those between 1-leaf stage of direct seeded rice and 4-leaf stage of barnyardgrass were almost 2-fold higher. Application of KSC-16960 with bentazone exhibited an additive controlling effect on several weed species, but that of quinclorac exhibited an antagonistic effect. With pyrazosulfuron-ethyl, on the other hand, both application of KSC-16960 and quinclorac showed additive interactions. Under a greenhouse condition, the residual activity of KSC-16960 to succeeding tomato plants was approximately 4-fold lower compared to that of quinclorac. KSC-16960 could be substituted for quinclorac, if it will be made some more improvement for reducing residual activity.
Influence of substituted phenylcarbamoyl group on the fungicidal activites of a new 5,6-dihydro-2-trifluoromethyl-1,4-oxathiincarboxanilide derivatives
Sung, Nack-Do ; Yu, Seong-Jae ; Nam, Kee-Dal ; Chang, Kee-Hyuk ; Hahn, Hoh-Gyu ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 64~69
New thirty derivatives of 5,6-dihydro-2-trifluoromethyl-1,4-oxathiin carboxanilide as substrate(S) were synthesized and their fungicidal activities in vivo against rice sheath blight(Rhizoctonia solani) and wheat leaf rust(Puccinia recondita) were examined. The structure activity relationships(SAR) between the activities(
) and a physicochemical parameters of substituents(X) at the phenylcarbamoyl group were analyzed using the adaptive regression analysis method. The 3-methoxy, 11, 3-isopropyloxy, 13 and 3-isopropyl substituent, 25 as X on the phenylcarbamoyl group exhibited the most highest fungicidal activity against the two fungi. The fungicidal potency of the (S) against Puccinia recondita was higher than Rhizoctonia solani. In case of Rhizoctonia solani, the molecular hydrophobicity(
) and resonance effect(R<0) by meta-alkyl substitutents with electron donating were important factors in determining fungicidal activity. And the HOMO energy(HOMO>0), ABSQ, sum of absolute values of the atomic charges on each atom and specific polarizability(Sp.Pol<0) of (S) were significantly influential towards fungicidal activity against Puccinia recondita.. The interaction between (S) and receptor agonist from the based on SAR studies proceeds through charge-control reaction, and conditions to show higher activity has been also discussed.
Effects of soil organic matter and oxidoreductase on adsorption and desorption of herbicide oxadiazon in soils
Lee, Wan-Seok ; Kim, Jang-Eok ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 70~78
Dissipation, adsorption and desorption of oxadiazon were examined in two soils containing different amounts of soil organic matter. In addition, reactivity of oxadiazon with humic monomers was searched to clarify binding mechanism of oxadiazon to soil organic matter in the presence of a laccase of Myceliophthera thermophila. Half lives of oxadiazon were 38 days in Soil I and 45 days in Soil II. Freundlich constant, k values of fresh soils were higher than those of oxidized soils. Adsorption rates of oxadiazon were increased 17.1% in Soil I and 9.3% in Soil II in the presence of a laccase but no significant increase was observed in oxidized soils. Desorption rates of oxadiazon in fresh soils were lower than those in oxidized soils. Desorption rates of adsorbed oxadiazon in soils addes with the enzyme were not changed in oxidized soils but decreased in fresh soils. The herbicide oxadiazon alone underwent no transformation by a laccase but in the presence of catechol, guaiacol and gallic acid as humic monomer, transformation rates of it were from 20% to 24%.
Determination and confirmation of the carbendazim residue in soybean sprout
Kim, Young-Gook ; Park, Jong-Tae ; Hong, Suk-Soon ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 79~84
Tandem HPLC and atmospheric pressure chemical ionization(APcI) LC/MS method was used for the determination and confirmation of carbendazim residues in soybean sprout. Fluorescence(FL) detector was connected in tandem with the ultraviolet(UV) detector for dual detection of the carbendazim residue at the excitation and emission wavelength of 280 nm and 310 nm, respectively. The limit of detection for carbendazim was
sample. Recoveries of carbendazim from fortified soybean sprout at 0.5, 1.0 and 2.0 ppm were averaged 89.1%. Mass spectrometry using a APcI source confirmed the carbendazim residue in the soybean sprout sample. Fragmentation pattern on the APcI LC/MS spectrum of carbendazim was simpler than that from electron impact(EI) mass spectrum. Carbendazim produced 3 major ions including m/z 133, m/z 159 and m/z 191(
). This method was sensitive enough to provide reliable and reproducible results for practical applications.
Growth and crop residue of soybean and barley grown at high paraquat level of the orchard soil
Chun, Jae-Chul ; Park, Nam-Il ; Kim, Sung-Eun ; Chun, Jae-Kwan ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 85~89
Effect of soil residue paraquat (1,1-dimethyl-4,4-dipyridinium dichloride) on growth of barley (Hordeum vulgare L. cv. Sacheon No.6 and cv. Tapgolbori) and soybean [Glycine max (L.) Merr. cv. Alcheon and Danyeop] was investigated. Changes in soil residue paraquat during the cultivation period and residue amount in the p1ants at harvest were also determined. Experiments were conducted at two paraquat residue conditions; the first was done in an apple orchard soil where paraquat residue recorded 30.2 ppm in 1996, but decreased to about 9 to 9.8 ppm at the time of crop seeding and the second was conducted in the soil fortified to about 27 to 32 ppm paraquat residue. In both conditions, no crop injury due to the residue paraquat was observed and number of emerged seedlings and plant height of the two crops were not affected by soil residue paraquat. Residue amount of paraquat in the plants occurred less than 0.5 ppm detection limit. At the first condition, soil residue paraquat was further slightly decreased for 90 days after seeding, while no great change in the residue level was found at the second condition for 30 days after seeding. The results suggest that no carry-over effect occurs at about 30 ppm of soil residue paraquat and at present crop cultivation in Korean orchard soils are safe with respect to crop growth and paraquat residue in the plants.
Residue and adsorptive capacity of paraquat in orchard soils
Chun, Jae-Chul ; Kim, Sung-Eun ; Park, Nam-Il ; Lim, Sung-Jin ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 90~95
Soil residues of paraquat (1,1-dimethyl-4,4-dipyridinium dichloride) were determined in apple, pear, grape, and peach orchards for which 15 sites each were selected randomly from the corresponding large-scale production area throughout the country. Strong adsorption capacity measured using wheat bioassay (paraquat concentration required to reduce 50% root growth of wheat, SAC-WB) was also investigated on the orchard soils and the paraquat residue level was calculated against total SAC-WB values (SAC-WB value + paraquat residue). Average bound residue of paraquat on the 60 sites was 6.9 ppm, while paraquat residue in apple orchard reached 20.2 ppm which was the highest among the orchards and was almost double as compared with those in the other three orchards. Loosely bound residue of paraquat determined on the bound residue high top five soils occurred less than 0.5 ppm detection limit. Average SAC-WB value was 276.1 ppm and there were no any correlations between the SAC-WB value and clay content, organic matter content, and cation exchange capacity of the orchard soils. Paraquat residue level of the orchard soils against total SAC-WB recorded 2.43%.
Behaviour of the soil residues of the herbicide quinclorac in the micro-ecosystem (pot)
Ahn, Ki-Chang ; Kyung, Kee-Sung ; Lee, Jae-Koo ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 96~106
Rice plants were grown for 42 days in the specially made micro-ecosystem(pot) containing two different soils treated with fresh and 60-day-aged residues of [
]quinclorac, respectively, to elucidate the behaviour of the herbicide quinclorac residues in the soils. Amounts of
evolved from two soils treated with different residues with and without vegetation were all less than 2.2% of the total
, indicating that there was little microbial degradation of quinclorac in soil.
-Radioactivity absorbed and translocated into rice plants from soil A and B containing fresh quinclorac residues was 8.4 and 24.2%, respectively, of the originally applied
, while 5.5 and 17.7%, in aged residue soils. These results indicate that larger amounts of
were absorbed by rice plants from soil B with less organic matter and clay than soil A, and the uptake of [
]quinclorac and its degradation products decreased with aging in soil. After 42 days of rice growing, 84.5 and 61.8% of the
applied freshly to soil A and B, respectively, remained in soil, whereas, in the case of aged soils, 86.3 and 67.7% of the
applied did. Meanwhile, without vegetation, more than 98.3% of the
applied, in both fresh and aged residues, remained in soil, suggesting that quinclorac was relatively persistent chemically and microbiologically. Most of the non-extractable soil-bound residues of [
]quinclorac were incorporated into the organic matter and largely distributed in the fulvic acid portion.
Effect of mixtures of gibberellic acid and several herbicides on the herbicidal activity against wild oat (Avena fatua L.)
Kim, Jin-Seog ; Choi, Jung-Sup ; Hong, Kyung-Sik ; Cho, Kwang-Yun ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 107~116
Based on the differential growth response to exogenous gibberellic acid (
) between semi-dwarf wheat(Triticum aestivum) and wild oat(Avena fatua), we examined the possibility of improving the selective performance of several herbicides by
application and the physiological background of
-induced increase in herbicidal activity. Growth of wild oat was 4 to 5 times higher than that of wheat by
treatment. Pretreatment of wild oat seed with 300 ppm
increased the herbicidal activities of trifluralin and isoproturon by soil-surface application, but not of alachor and metsulfuron-methyl.
applied simultaneously with post-emergence herbicides resulted in a significant or moderate improvement of the efficacy of such herbicides as tralkoxydim, fenoxaprop-ethyl, metsulfuron-methyl, metribuzine and isoproturon, but not in the mixtures of oxyfluorfen or paraquat with
. In the sequencial treatment of tralkoxydim and
at interval of one-day,
applied prior to tralkoxydim significantly increased a chlorosis and desiccation of leaf without affecting the growth inhibition by tralkoxydim. Tralkoxydim followed by
application had lower herbicidal activity than that of
followed by tralkoxydim treatment. Electrolyte leakage response of
-untreated wild oat leaf against several compounds inducing membrane. peroxidation was compared. Differencial responses were observed in oxyfluorfen and isoproturon treatments with an increased electrolyte leakage in
-pretreated tissue, but not in paraquat and rose bengal treatments. These results suggest that
-induced increase in herbicidal activity is likely to be dependent on a herbicide type and may be due to activation of a metabolic ability related with herbicidal reponse as well as an increase in the herbicide absorbtion and translocation, rather than due to membrane and cell wall extention induced by
, which in turn makes the herbicides easily enter.
Property of action of new insecticide, flupyrazofos against diamondback moth, Plutella xylostella
Kim, Gil-Hah ; Moon, Sun-Ju ; Chang, Young-Duck ; Cho, Kwang-Yun ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 117~125
Flupyrazofos (O,O-diethyl-O-(1-phenyl-3-trifluoromethyl-5-pyrazoyl)thiophosphoric acid ester) is a new organo-phosphorous insecticide. Flupyrazofos has exhibited excellent activity against diamondback moth (Plutella xylostella, DBM), and it is highly activity against rice armyworm(Pseudaleta separata) and cotton caterpillar(Palpita indicae). Flupyrazofos has then revealed outstanding both rapidity and residual action for DBM, although no systemic actions were observed and no cross-resistances were found to the resistance strains (Op-R, Py-R, IGR-R). Also, susceptibilities of five local strains to flupyrazofos were similar to those of the susceptible strain. These results indicate that flupyrazofos has considerable potential for controlling diamondback moth, rice armyworm and cotton caterpillar in field.
Action properties and insecticidal effects of thiamethoxam to the melon aphid, Aphis gossypii, and diamondback moth, Plutella xylostella
Jang, Cheol ; Hwang, In-Cheon ; Yu, Yong-Man ; Choe, Kwang-Ryul ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 126~136
For the purpose of effective control strategy of the melon aphid, Aphis gossypii and the diamondback moth, Plutella xylostella, thiamethoxam and 3 other insecticides in different classes were used with bioassay test methods in laboratory and greenhouse. They were examined to evaluated and compared with contact toxicity, stomach toxicity, rapid action, systemic action, and residual effect of imidacloprid, thiamethoxam (nicotinoids), acephate (organophosphorates), and carbosulfan (carbamates). As results of contact toxicity responses of A. gassypii against 4 insecticides using a spray application method,
values of acephate, carbosulfan, imidacloprid and thiamethoxam were 41.9, 5.2, 1.1, and 0.7 ppm. respectively. In the evaluation of stomach toxicity response of P. xylostella using a leaf-dipping method, with the 2nd instar larva
values of imidacloprid, thiamethoxam and acetamiprid were 64.9, 24.6 and 15.2 ppm, with the 3rd instar larva were 125.2, 42.7 and 27.8 ppm. and with the 4th instar larva were 241.1, 44.5 and 23.9 ppm, respectively. In the case of rapid action to A. gossypii using a spray application method after inoculation,
values of imidacloprid, thiamethoxam, carbosulfan, and acephate were 26.6, 28.0, 30.3, and 41.7 min. respectively. Otherwise, in the inoculation after applying compounds,
values of thiamethoxam, imidacloprid, and carbosulfan were 95.5, 118.0, and 122.9 min. respectively. Evaluating to systemic action from the abaxial surface to the adaxial surface of red pepper leaf with spray method,
values of thiamethoxam, imidacloprid, and carbosulfan were 162.2, 168.9, and 564.1 min. respectively. For the systemic action from the lower leaves to the upper leaves on red pepper,
values of carbosulfan, thiamethoxam, imidacloprid, and acephate were 2.3, 2.9, 3.0, and 8.8 days, respectively. In red pepper plant,
values of carbosulfan, imidacloprid, thiamethoxam, and acephate on the systemic action from the roots to the upper leaf were 0.6, 1.0, 1.0, and 13.8 days, respectively. As these results, it might be that thiamethoxam was excellent on systemic effect in red pepper. For the evaluation of residual effect on red pepper with A. gossypii, thiamethoxam and imidacloprid maintained high control effects as over 80% upto 10 days after treating compounds.
Effects of several insect growth regulators on the development of housefly, Musca domestica L., larvae
Park, Chung-Gyoo ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 137~146
Laboratory tests were carried out to evaluate the effect of several insecticides with insect growth regulator (IGR) properties on the larval development of housefly, Musca domestica, which was collected at a large pigpen in Hamyang, Gyeongnam, Korea in 1997. Commercial formulations of the chemicals were diluted with tap water into a range of concentrations, and mixed with larval media. In addition to the IGRs, imidacloprid 5% WP was tested, too. The IGRs treated at the 2nd instar stage induced higher larval mortalities than percentages of malformed pupae. The result were, however, opposite when the IGRs were treated at the 3rd instar stage. Overall mortality resulting from larval death and malformed pupae was dependent on concentration. Diflubenzuron, teflubenzuron, triflumuron, flufenoxuron, tebufenozide, and imidacloprid, treated to the 2nd instar larvae, showed mortality over 95 % at concentrations of 5 ppm, 3 ppm, 30 ppm, 5 ppm, over 1000 ppm, 1000 ppm, respectively. Higher concentrations were needed to get the same level. of mortality in the 3rd instar larvae as that in the 2nd larvae. Overall mortality over 95% at the 3rd instar could be get at concentrations of 100 ppm, 10 ppm, 300 ppm, 10 ppm of diflubenzuron, teflubenzuron, triflumuron, flufenoxuron, respectively. Tebufenozide (1,000 ppm) and imidacloprid (300 ppm) were less effective than the other chemicals, showing only 36.7% and 86.7% mortalities, respectively. The chemicals also affected pupal weight at high concentrations. Decrease of pupal weight was distinct at high concentrations of teflubenzuron, flufenoxuron, tebufenozide, imidacloprid. Diflubenzuron and triflumuron were less effective. From these results it could be concluded that the IGR insecticides can be used as control agents by interfering with moulting and pupation process of housefly, by reducing pupal weight which could be resulted in low fertility and less oviposition.
Synthesis and herbicidal activity of new benzenesulfonylurea derivatives possessing
-keto ester moiety
Ko, Young-Kwan ; Chang, Hae-Sung ; Ryu, Jae-Wook ; Woo, Jae-Chun ; Koo, Dong-Wan ; Kim, Jin-Seog ; Kim, Dae-Whang ;
The Korean Journal of Pesticide Science, volume 2, issue 3, 1998, Pages 147~150
A series of new benzenesuIfonylurea derivatives possessing
-keto ester moiety as an ortho substituent were synthesized by employing new methodology starting from 2-bromophenyl methoxymethyl sulfide and some of them were found to have good herbicidal activity at foliar application.